<style>
	#toolbar
	{
		margin: 40px auto 20px auto;
		padding: 0;
		list-style: none;
	}
	#toolbar li
	{
		float:left;
		margin-right: 50px;
		cursor: pointer;
	}
	#toolbar li a
	{
		display: inline-block;
		color: inherit;
		text-decoration: none;
	}
	#toolbar li img
	{
		width: 40px;
		vertical-align: middle;
	}
	.cl{ clear: both; }
</style>

<li>
	<a href="../..">
		<img src="../../src/homepage.svg" alt="返回首页" title="返回首页" id="go_homepage" />
		<span>返回首页</span>
	</a>
</li>
<li id="update_realtime" data-status="on">
	<img src="../../src/switch-on.svg" alt="实时更新" title="实时更新" />
	<span>实时更新</span>
</li>
<li id="add_user">
	<a href="../../add_user.html">
		<img src="../../src/add-user.svg" alt="添加用户" title="添加用户" />
		<span>添加用户</span>
	</a>
</li>
<li id="logout">
	<a href="../../logout.php">
		<img src="../../src/logout.svg" alt="退出登录" title="退出登录" />
		<span>退出登录</span>
	</a>
</li>
<div class="cl">
